Does anybody know a good place to go to find info about qc files? I'm interested in some of the more advanced things you can do with them, but information is scarce from what I can find.

I believe it's possible to link to other qc files from within a qc, for example to attach animations to a qc without having to paste everything into each file. How do I go about doing that?

im not good with qc's but this site http://collective.valve-erc.com/index.php?doc=1043360861-70912800 which is also in the studiomdl sticky :P has tons of information on HL editing